diff --git a/bibliography.tex b/bibliography.tex
index 818f17e..9994303 100644
--- a/bibliography.tex
+++ b/bibliography.tex
@@ -5,7 +5,15 @@
 \begin{thebibliography}{defaultmarken}
 %
 %	
-	\bibitem{bib:thielen-froh-getestet} \textbf{Prof. Dr-Ing. Herbert Thielen 2021, indirektes Zitat}: \emph{Lehrveranstaltung 2021, Hochschule Worms - Softwarequalität}
+	\bibitem[Swe21]{bib:sicherheit-fuer-tcpip} {
+		\bibformat
+			{Wenzel, S., Wenzel, S.} % Author(s)
+			{IT-Sicherheit für TCP/IP- und IoT-Netzwerke} % Publication title
+			{Worms} % Publication city
+			{Springer Verlag} % Publisher
+			{2021} % Publication date
+		{}
+	}
 %
 %
 \end{thebibliography}
diff --git a/kapitel/foobar.tex b/kapitel/foobar.tex
index e958448..cf7068a 100644
--- a/kapitel/foobar.tex
+++ b/kapitel/foobar.tex
@@ -3,4 +3,4 @@
 %
 
 \chapter{Foobar}
-Ene mene miste, es schwurbelt in der Kiste.
\ No newline at end of file
+Wer testet, der questet\cite{bib:sicherheit-fuer-tcpip}.
\ No newline at end of file
diff --git a/macros.tex b/macros.tex
index 73c0872..b3b1983 100644
--- a/macros.tex
+++ b/macros.tex
@@ -10,3 +10,13 @@
 
 % Will do a full reference, with both a number AND a caption. Like '1.2.3 Coding the code'
 \newcommand{\fullref}[1]{\ref{#1} \nameref{#1}}
+
+% Bibliography formatting
+% #1 -> authors
+% #2 -> title
+% #3 -> publishing city
+% #4 -> publisher
+% #5 -> year of release
+\newcommand{\bibformat}[5] {
+    #1: \textit{#2}. #3: #4, #5
+}
diff --git a/main.pdf b/main.pdf
index ba18dca..66ca894 100644
Binary files a/main.pdf and b/main.pdf differ